/* ============================================
   PAGE LOAD ANIMATIONS
   ============================================ */

body {
  opacity: 0;
  visibility: hidden;
  background-color: var(--bg-primary);
}

body.loaded {
  opacity: 1;
  visibility: visible;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* header */
header {
  animation: slideInDown 0.6s ease forwards;
  opacity: 0;
}

body.loaded header {
  opacity: 1;
}

/* sidebar */
.docs-sidebar {
  opacity: 0;
  animation: fadeIn 0.6s ease forwards;
  animation-delay: 0.3s;
}

/* content sections */
.docs-section {
  opacity: 0;
  animation: fadeInUp 0.8s ease forwards;
}

.docs-section:nth-child(1) { animation-delay: 0.4s; }
.docs-section:nth-child(2) { animation-delay: 0.5s; }
.docs-section:nth-child(3) { animation-delay: 0.6s; }
.docs-section:nth-child(4) { animation-delay: 0.7s; }
.docs-section:nth-child(5) { animation-delay: 0.8s; }
.docs-section:nth-child(6) { animation-delay: 0.9s; }

/* reduce motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  body {
    opacity: 1;
    visibility: visible;
  }
}

.docs-section:target {
  opacity: 1 !important;
  animation: none !important;
}

.docs-section.loaded-from-anchor {
  opacity: 1 !important;
  animation: none !important;
}

.docs-section:target.docs-section {
  animation: docs-highlight 1s ease !important;
}

/* ============================================
   DOCUMENTATION PAGE STYLES
   ============================================ */

/* main layout */
.docs-main {
  display: flex;
  min-height: calc(100vh - 80px);
  padding-top: 0;
}

/* sidebar */
.docs-sidebar {
  position: sticky;
  top: 80px;
  width: 280px;
  flex-shrink: 0;
  padding: 2rem 0;
  height: calc(100vh - 80px);
  overflow-y: auto;
  align-self: flex-start;
}

.docs-sidebar-content {
  padding: 0 1.5rem;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.docs-sidebar-title {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-light);
  flex-shrink: 0;
  cursor: default;
}

.docs-nav {
  flex-grow: 1;
  overflow-y: auto;
  padding-bottom: 1.5rem;
  padding-right: 8px;
}

.docs-nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.docs-nav-link {
  display: block;
  padding: 0.5rem 0.75rem;
  color: var(--text-secondary);
  font-size: 0.9375rem;
  text-decoration: none;
  border-radius: 0.5rem;
  transition: all var(--transition-fast);
  margin-bottom: 0.25rem;
  user-select: none;
}

.docs-nav-link:hover {
  color: var(--text-primary);
  background: var(--card-bg);
}

.docs-nav-link.active {
  color: var(--accent-primary);
  background: var(--accent-soft);
}

.docs-nav-sublist {
  list-style: none;
  padding: 0;
  margin: 0.25rem 0 0.25rem 1rem;
  border-left: 2px solid var(--border-light);
  padding-left: 0.75rem;
}

.docs-nav-sublist .docs-nav-link {
  font-size: 0.875rem;
  padding: 0.375rem 0.5rem;
}

.docs-sidebar-footer {
  margin-top: auto;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-light);
  flex-shrink: 0;
  padding-bottom: 1rem;
}

.docs-github-link {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  border-radius: 0.5rem;
  color: var(--text-primary);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-normal);
  user-select: none;
}

.docs-github-link:hover {
  background: var(--card-bg-solid);
  border-color: var(--text-secondary);
}

.docs-github-link .icon {
  color: var(--text-primary);
}

/* content area */
.docs-content {
  flex-grow: 1;
  padding: 3rem 4rem;
  max-width: 100%;
  overflow-x: hidden;
}

.docs-container {
  max-width: 900px;
  margin: 0 auto;
}

/* sections */
.docs-section {
  margin-bottom: 5rem;
  scroll-margin-top: 6rem;
}

.docs-section:last-child {
  margin-bottom: 2rem;
}

.docs-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
  cursor: default;
}

.docs-section-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-light);
  cursor: default;
}

.docs-subsection-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 2.5rem 0 1rem;
  color: var(--text-primary);
  cursor: default;
}

.docs-lead {
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 2rem;
}

/* info box */
.docs-info-box {
  display: flex;
  gap: 1rem;
  padding: 1.5rem;
  background: var(--tertiary-soft);
  border: 1px solid var(--border-light);
  border-radius: 1rem;
  margin: 2rem 0;
}

.docs-info-icon {
  color: var(--tertiary-primary);
  flex-shrink: 0;
}

.docs-info-box h4 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  cursor: default;
}

.docs-info-box p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.6;
  margin: 0;
}

/* features grid */
.docs-features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin: 2rem 0;
  align-items: start;
}

.docs-feature-card {
  padding: 1.5rem;
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  border-radius: 1rem;
  text-align: center;
  transition: all var(--transition-normal);
  height: auto;
}

.docs-feature-card:hover {
  border-color: var(--border-medium);
}

.docs-feature-icon {
  color: var(--accent-primary);
  margin-bottom: 1rem;
}

.docs-feature-card h4 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  cursor: default;
}

.docs-feature-card p {
  color: var(--text-secondary);
  font-size: 0.875rem;
  line-height: 1.5;
  margin: 0;
}

/* steps */
.docs-step {
  display: flex;
  gap: 1.5rem;
  margin: 2rem 0;
}

.docs-step-number {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-primary);
  color: #fff;
  font-size: 1.25rem;
  font-weight: 700;
  border-radius: 50%;
  flex-shrink: 0;
  user-select: none;
}

.docs-step-content h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  cursor: default;
}

.docs-step-content p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.6;
  margin: 0;
}

.docs-download-trigger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  background: var(--accent-primary);
  color: #fff;
  border-radius: 0.5rem;
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  margin: 1rem 0 1.5rem;
  border: none;
  user-select: none;
}

.docs-download-trigger:hover {
  background: var(--accent-hover);
}

.docs-download-trigger .icon {
  color: #fff;
}

/* warning Box */
.docs-warning-box {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  background: rgba(251, 82, 82, 0.1);
  border: 1px solid var(--accent-border);
  border-radius: 0.75rem;
  margin-top: 1rem;
}

.docs-warning-icon {
  color: var(--accent-primary);
  flex-shrink: 0;
  margin-top: 0.125rem;
}

.docs-warning-box p {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin: 0;
}

/* image block */
.docs-image-block {
  margin: 1.5rem 0;
  overflow: hidden;
}

.docs-preview-img {
  width: 70%;
  height: auto;
  display: block;
}

/* methods grid */
.docs-methods-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin: 2rem 0;
  align-items: start;
}

.docs-method-card {
  padding: 1.5rem;
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  border-radius: 1rem;
  position: relative;
  height: auto;
  transition: border-color var(--transition-normal);
}
.docs-method-card:hover {
  border-color: var(--border-medium);
}

.docs-method-card h4 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  cursor: default;
}

.docs-method-card p {
  color: var(--text-secondary);
  font-size: 0.875rem;
  line-height: 1.5;
  margin: 0 0 1rem;
}

.docs-badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: var(--accent-soft);
  color: var(--accent-primary);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 1rem;
  cursor: default;
  user-select: none;
}

/* lists */
.docs-ordered-list,
.docs-unordered-list {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.8;
  margin: 1.5rem 0;
}

.docs-ordered-list {
  padding-left: 1.5rem;
}

.docs-unordered-list {
  padding-left: 1.5rem;
  list-style-type: disc;
}

.docs-ordered-list li,
.docs-unordered-list li {
  margin-bottom: 0.5rem;
}

.docs-ordered-list li strong,
.docs-unordered-list li strong {
  color: var(--text-primary);
}

/* settings */
.docs-settings-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin: 2rem 0;
  align-items: start;
}

.docs-setting-item {
  padding: 1.5rem;
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  border-radius: 1rem;
  height: auto;
  transition: border-color var(--transition-normal);
}
.docs-setting-item:hover {
  border-color: var(--border-medium);
}

.docs-setting-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.docs-setting-header h4 {
  font-size: 1.125rem;
  font-weight: 700;
  cursor: default;
}

.docs-setting-item p {
  color: var(--text-secondary);
  font-size: 0.875rem;
  line-height: 1.5;
  margin: 0 0 1rem;
}

.docs-setting-path {
  background: var(--bg-tertiary);
  padding: 0.5rem 0.75rem;
  border-radius: 0.5rem;
}

.docs-setting-path code {
  font-size: 0.8125rem;
  font-family: 'Consolas', 'Monaco', monospace;
  color: var(--tertiary-primary);
  cursor: default;
}

/* faq */
.docs-faq-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin: 2rem 0;
}

.docs-faq-item {
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  border-radius: 1rem;
  overflow: hidden;
  transition: border-color var(--transition-normal);
}

.docs-faq-item:hover {
  border-color: var(--border-medium);
}

.docs-faq-question {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1.25rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
  cursor: default;
}

.docs-faq-icon {
  color: var(--accent-primary);
  flex-shrink: 0;
}

.docs-faq-answer {
  padding: 0 1.5rem 1.25rem;
}

.docs-faq-answer p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.6;
  margin: 0;
}

/* support */
.docs-support-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin: 2rem 0;
  align-items: start;
}

.docs-support-card {
  padding: 2rem;
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  border-radius: 1.25rem;
  text-align: center;
  transition: all var(--transition-normal);
  height: auto;
}

.docs-support-card:hover {
  border-color: var(--border-medium);
}

.docs-support-icon {
  color: var(--accent-primary);
  margin-bottom: 1rem;
}

.docs-support-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-top: -1.25rem;
  margin-bottom: 0.5rem;
  cursor: default;
}

.docs-support-card p {
  color: var(--text-secondary);
  font-size: 0.875rem;
  line-height: 1.5;
  margin: 0 0 1.5rem;
}

/* buttons */
.docs-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-normal);
  user-select: none;
}

.docs-btn-primary {
  background: var(--accent-primary);
  color: #fff;
}

.docs-btn-primary:hover {
  background: var(--accent-hover);
}

.docs-btn-secondary {
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  color: var(--text-primary);
}

.docs-btn-secondary:hover {
  background: var(--card-bg-solid);
  border-color: var(--border-medium);
}

.docs-btn .icon {
  transition: transform var(--transition-fast);
}

.docs-btn:hover .icon {
  transform: translateX(4px);
}

/* ============================================
   DOWNLOAD MODAL
   ============================================ */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  padding: 20px;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-overlay.closing {
  opacity: 0;
}

.modal-container {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: 20px;
  max-width: 680px;
  width: 100%;
  position: relative;
  transform: scale(0.9);
  opacity: 0;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), 
              opacity 0.3s ease;
  box-shadow: var(--shadow-large);
}

.modal-overlay.active .modal-container {
  transform: scale(1);
  opacity: 1;
}

.modal-overlay.closing .modal-container {
  transform: scale(0.9) translateY(20px);
  opacity: 0;
}

.modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 40px;
  height: 40px;
  border: none;
  background: var(--card-bg);
  border-radius: 10px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  z-index: 10;
}

.modal-close:hover {
  background: var(--accent-primary);
  color: #fff;
}

.modal-close .icon {
  width: 20px;
  height: 20px;
}

.modal-header {
  padding: 40px 40px 20px;
  text-align: center;
}

.modal-header h2 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
  cursor: default;
}

.modal-header p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.modal-content {
  padding: 0 40px 40px;
}

.download-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 30px;
}

.download-option {
  display: flex;
  flex-direction: column;
  padding: 24px;
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  text-decoration: none;
  color: var(--text-primary);
  transition: all var(--transition-normal);
  cursor: pointer;
}

.download-option:hover {
  background: var(--card-bg-solid);
  border-color: var(--accent-hover);
}

.download-option-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-soft);
  border-radius: 14px;
  margin-bottom: 16px;
  color: var(--accent-primary);
}

.download-option-icon .icon {
  width: 32px;
  height: 32px;
}

.download-option h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.download-option p {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 16px;
  flex-grow: 1;
}

.download-option-size {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 600;
  padding: 0.375rem 0.75rem;
  background: var(--card-bg-lighter);
  border-radius: 0.375rem;
  align-self: flex-start;
  user-select: none;
}

.modal-divider {
  height: 1px;
  background: var(--border-light);
  margin: 0 0 24px;
}

.github-download-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.625rem;
  padding: 0.875rem 1.5rem;
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  border-radius: 0.75rem;
  color: var(--text-primary);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-normal);
}

.github-download-btn:hover {
  background: var(--card-bg-solid);
  border-color: var(--border-medium);
}

.github-download-btn .icon {
  width: 1.25rem;
  height: 1.25rem;
  color: var(--text-primary);
}

/* ============================================
   MEDIA QUERIES
   ============================================ */
@media (max-width: 1200px) {
  .docs-sidebar {
    width: 240px;
  }
  
  .docs-content {
    padding: 2.5rem 3rem;
  }
}

@media (max-width: 1024px) {
  .docs-main {
    flex-direction: column;
    min-height: auto;
  }
  
  .docs-sidebar {
    position: relative;
    top: 0;
    width: 100%;
    height: auto;
    max-height: none;
    border-right: none;
    border-bottom: 1px solid var(--border-light);
  }
  
  .docs-sidebar-content {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: center;
  }
  
  .docs-sidebar-title {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
  }
  
  .docs-nav {
    width: 100%;
  }
  
  .docs-nav-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
  }
  
  .docs-nav-sublist {
    display: none;
  }
  
  .docs-sidebar-footer {
    width: 100%;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-light);
  }
  
  .docs-features-grid,
  .docs-methods-grid,
  .docs-settings-grid,
  .docs-support-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .docs-content {
    padding: 2rem;
  }
  
  .docs-title {
    font-size: 2rem;
  }
  
  .docs-section-title {
    font-size: 1.5rem;
  }
  
  .docs-subsection-title {
    font-size: 1.25rem;
  }
  
  .docs-step {
    flex-direction: column;
    gap: 1rem;
  }
  
  .docs-step-number {
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }

  .docs-preview-img {
    width: 100%;
  }
  
  .modal-container {
    max-width: 100%;
    margin: 0;
    border-radius: 16px;
  }
  
  .modal-header {
    padding: 30px 24px 16px;
  }
  
  .modal-header h2 {
    font-size: 1.375rem;
  }
  
  .modal-content {
    padding: 0 24px 30px;
  }
  
  .download-options {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  
  .download-option {
    padding: 20px;
  }
  
  .modal-close {
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
  }
  
  .docs-faq-question {
    padding: 1rem 1.25rem;
    font-size: 0.9375rem;
    gap: 0.625rem;
  }
  
  .docs-faq-answer {
    padding: 0 1.25rem 1rem;
  }
  
  .docs-faq-answer p {
    font-size: 0.875rem;
  }
}

@media (max-width: 480px) {
  .docs-sidebar-content {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .docs-nav-list {
    flex-direction: column;
    width: 100%;
  }
  
  .docs-nav-link {
    width: 100%;
  }
  
  .docs-info-box {
    flex-direction: column;
    gap: 0.75rem;
  }
  
  .docs-support-card {
    padding: 1.5rem;
  }
  
  .docs-btn {
    width: 100%;
  }
  
  .modal-overlay {
    padding: 16px;
    align-items: center;
  }
  
  .modal-container {
    border-radius: 20px;
    max-height: 90vh;
    overflow-y: auto;
  }
  
  .modal-header {
    padding: 24px 20px 12px;
  }
  
  .modal-content {
    padding: 0 20px 24px;
  }
  
  .docs-faq-question {
    padding: 0.875rem 1rem;
    gap: 0.5rem;
  }
  
  .docs-faq-answer {
    padding: 0 1rem 0.875rem;
  }
}

/* ============================================
   SCROLL BEHAVIOR
   ============================================ */
html {
  scroll-behavior: smooth;
}